율무 이삭마름 증상에서 분리한 Fusarium속 균의 다양성 및 병원성

• Published in: Hangug gynnhaghoi ji Vol. 39; no. 3; pp. 217 - 222
• Main Authors: 최효원, Hyo Won Choi, 홍성기, Sung Kee Hong, 김완규, Wan Gyu Kim, 이영기, Young Kee Lee
• Format: Journal Article
• Language: Korean
• Published: 한국균학회 01.12.2011
• Subjects: Fusarium species; Head blight; Identification; Job`s tears; 생물학; Head blight; Identification; Fusarium species; Job's tears
• ISSN: 0253-651X; 2383-5249

Job`s tears (Coix lacryma-jobi) is native to East Asia, and grains of the plant are used as health food and medicinal material. Head blight symptoms of the plant were frequently observed during disease surveys in Korea from 2006 to 2008. The symptoms were characterized as discoloration of husks, and subsequently inside of mature grains were shriveled or emptied. One hundred fifty nine isolates of Fusarium species were obtained from the disease symptoms of the plant collected from several locations in the country. Out of the isolates, the most frequently isolated Fusarium species were F. graminearum (34%), F. proliferatum (14.5%), F. verticillioides (10.1%), F. equiseti (6.9%), and F. fujikuroi (6.3%). Other Fusarium species isolated were F. subglutinans, F. semitectum, F. poae, and F. sporodochioides. Elongation factor 1 alpha gene sequences of the isolates were used for phylogenetic analysis. Analyses of the sequences revealed that the isolates were confirmed to be identical with each reference species of NCBI GenBank. Pathogenicity tests showed that F. graminearum, F. proliferatum and F. verticillioides were strongly virulent to grains of Job`s tears. The present study is the first report of head blight of Job`s tears caused by Fusarium species in Korea.